I have two Samsung 840 EVO SSD's in RAID 1 (Asus P87-Pro and Intel Controller) with Windows 8.1 Pro on it. After a BIOS update, apparently all BIOS settings was reset, which apparently changed the SATA mode from RAID to AHCI (default). Although my Windows should have theoretically booted (from one of the disks), it failed to boot and went to automatic repair. After multiple repairs, etc. I realized that SATA config might be the issue and set it back correctly but again, Windows does not boot with a different error, this time it does not even get to the repair options, etc. screen.
The BIOS does not show the RAIR volume or the the disks (if switched to AHCI mode) UEFI capable and I am wondering what is wrong and if this is the issue.
I have backed up my UEFI keys but it seems I do not have much of a way to recover them, any thoughts on this is highly appreciated.